diff --git a/init/Kconfig b/init/Kconfig
index 036b750e8d8a8b74007da9f9568b775bb349a857..4b7bac10c72d30db71b12347cb5d6c290ae8c156 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -887,7 +887,7 @@ config CC_HAS_INT128
 
 config CC_IMPLICIT_FALLTHROUGH
 	string
-	default "-Wimplicit-fallthrough=5" if CC_IS_GCC
+	default "-Wimplicit-fallthrough=5" if CC_IS_GCC && $(cc-option,-Wimplicit-fallthrough=5)
 	default "-Wimplicit-fallthrough" if CC_IS_CLANG && $(cc-option,-Wunreachable-code-fallthrough)
 
 #